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Commitments and Contingencies Lease Commitments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]      
Operating Leases, Rent Expense $ 1,536 $ 1,600 $ 1,500
Operating Leases, Future Minimum Payments Due, Next Twelve Months 1,305    
Operating Leases, Future Minimum Payments, Due in Two Years 1,253    
Operating Leases, Future Minimum Payments, Due in Three Years 1,089    
Operating Leases, Future Minimum Payments, Due in Four Years 569    
Operating Leases, Future Minimum Payments, Due Thereafter 825    
Operating Leases, Future Minimum Payments Due $ 5,041